Effects of the ambient temperature and initial diameter in droplet combustion

Results are presented from transient numerical simulations of combustion of an isolated heptane (n-C7H16) droplet in nearly quiescent ambient air. The focus is on the effects of environment temperature and droplet size on the combustion characteristics. Droplet sizes range from 10 μm to 1 mm, environment temperatures range from 800 K to 1600 K, and pressure is 1 atm. The results show that ignition delay times have a very moderate dependence on...